Size Chart - Fitbit Charge 3 & Charge4 Twist-o-Flex

Fitbit Charge 3 Band Sizes

Band Size	Wrist Size (in inches)	Wrist Size (in mm's)
XS	5.6" – 5.8"	143 – 147 mm
S	6.2" – 6.4"	158 – 162 mm
M	6.8" – 7.0"	172 – 176 mm
L	7.6" – 7.8"	193 – 197 mm
XL	8.8" – 9.0"	223 – 227 mm

View our Band Length Sizing Guide

If you are on the line between sizes, we recommend choosing the larger size as you can remove links with the use of our link removal guide. You can also visit a local authorized Speidel jeweler and have it sized for you.

If you need a size that is larger than our current offerings, additional links can be added. Visit speidel.com for additional link kits.